Einstein, Albert


Theoretical physicist, born in Württemberg, Germany (1879–1955), who became an American citizen in 1940. While working as a patent clerk in Zurich, he developed theories on the photoelectric effect and relativity, for which he won a Nobel Prize in physics in 1921. He was also associated with the Manhattan Project, which resulted in the development of the atomic bomb. In 1999, Time magazine named Einstein "Person of the Century."

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